三个红色和两个黑色
9 X* r7 C& Z2 {- q1 utvb now,tvbnow,bttvb
" a' T+ S: G! e4 D+ P1 ?- I5.39.217.77最后那个说我不知道我戴什么颜色帽子.
$ D! x8 f! V9 w. L" F; V5.39.217.77- the front #1 , #2 must not be black/black. Otherwise, #3 will know he is red. #1/#2 must be red/red or red/black or black/red.5.39.217.77 U9 i$ c: U7 b a6 V/ D
$ z A k1 ]$ I8 s7 J* S; u中间那个说我也不知道我戴什么颜色帽子.tvb now,tvbnow,bttvb/ V7 p% S7 c0 Y: N& \6 ]4 R: Q# p) `
- for #2, if he see #1 wearing black, he can be sure he is red. since #2 cannot be sure, then #1 must NOT be wearing black.
( ?6 e( l/ S2 T1 z9 h# jtvb now,tvbnow,bttvb5.39.217.77; n/ A/ {' J" k1 @; Q- c+ E" G
但是第一个说我知道我戴什么颜色帽子.公仔箱論壇( j. u V5 f" r# W" e3 {/ G% I0 i
- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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